Effect of Inlet Mixture Stratification on Bluff-Body Stabilized, Turbulent, Prevaporized n-Heptane-Air Flames
Publication: Journal of Energy Engineering
Volume 147, Issue 5
Abstract
An investigation of the characteristics of turbulent prevaporized n-heptane-air flames, stabilized in the downstream wake region of a stratifier/bluff-body combustor configuration under the effect of inlet fuel-air mixture stratification and preheat, is presented. Experimental and computational results for different fuel-air mixing wake topologies have been obtained by regulating the fuel injection level and the incoming fuel-air ratio gradient. Fourier transform infrared analysis and particle image velocimetry measurements were taken to assess the mixing field characteristics in the near-wake region under nonreacting operation. Chemiluminescence measurements were also obtained to assess the flame topology under reacting conditions. In the computations, an implicit, finite-volume-based large eddy simulation method, coupled with a 25-species reduced kinetic scheme, was utilized for reproducing the mixing and the reacting field characteristics.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research is cofinanced by Greece and the European Union (European Social Fund- ESF) through the Operational Programme, Human Resources Development, Education and Lifelong Learning 2014–2020, in the context of the project “Development and integration of a combination of innovative methodologies into a low-emission combustion system for energy production using liquid fuels” [Management Information System (MIS): 5047151].
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Published In
Journal of Energy Engineering
Volume 147 • Issue 5 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Apr 2, 2021
Accepted: Jun 1, 2021
Published online: Aug 3, 2021
Published in print: Oct 1, 2021
Discussion open until: Jan 3, 2022
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